Wingtime,I have read about using the right oil to prevent a blown engine as well. He rebuilt both engines but only one had a bad lower unit. Apparently these engines had an issue with the way the computers were programmed to inject the fuel. I have reade that they were programmed to run too lean or that they were stretching the atomized fuel out so far that it was having a negative impact the ability of the oil to lube the pistons. Once the Bombadier's engineers came in after they bought OMC in 2002 out of bankruptcy they remapped or reprogrammed the computers and they had better success with engines. Both of these engines have all of the updates and fixes that Bombadier issued. This is all information I gathered from online forums so take it FWIW.
Capt Bob you may have missed they are model year 2000 engines.
How do I post pictures?